Ocean currents control the climate around the world. When they suddenly stop, it unleashes an endless cascade of weather disasters including blizzards, superstorms, drought and rapid sea level rise.
(PART 1) A team of experts and explorers venture into the Danakil desert in Northern Ethiopia to investigate the incredible geology of the area, and to find out how the people and their animals survive in the hottest place on earth. Kate Humble investigates how tough life is for an Afar woman; Steve Leonard wants to learn about the relationship between the Afar and their animals, and to help with animal medicine where he can; Dr Mukul Agarwal looks at the health issues faced in this most hostile of environments; earth scientist Dougal Jerram looks at the extraordinary volcanic activity of the region and the part it plays in the bigger geological picture of the Rift Valley; and biologist Richard Wiese searches for extreme life forms in the boiling soil of a massive volcanic fissure.
The picturesque Lake Constance region is characterized by intensive agriculture - with dramatic results for the bird life. Since 2003, the ornithologist Professor Peter Berthold has been creating new habitats for birds - alongside cultivated landscapes.